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* re.c (rb_reg_search): iterate onig_match for reverse mode.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14876 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -1,3 +1,7 @@
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Fri Jan 4 02:47:06 2008 Tanaka Akira <akr@fsij.org>
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* re.c (rb_reg_search): iterate onig_match for reverse mode.
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Fri Jan 4 01:20:21 2008 Nobuyoshi Nakada <nobu@ruby-lang.org>
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* win32.h: only VC6 needs extern "C++" for math.h. [ruby-talk:285660]
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31
re.c
31
re.c
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@ -1036,6 +1036,7 @@ rb_reg_search(VALUE re, VALUE str, int pos, int reverse)
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VALUE match;
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static struct re_registers regs;
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int range;
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rb_encoding *enc = rb_enc_get(str);
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if (pos > RSTRING_LEN(str) || pos < 0) {
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rb_backref_set(Qnil);
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@ -1045,19 +1046,33 @@ rb_reg_search(VALUE re, VALUE str, int pos, int reverse)
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rb_reg_prepare_re(re, str);
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if (reverse) {
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range = -pos;
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char *p = RSTRING_PTR(str) + pos;
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while (1) {
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result = onig_match(RREGEXP(re)->ptr,
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(UChar*)(RSTRING_PTR(str)),
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((UChar*)(RSTRING_PTR(str)) + RSTRING_LEN(str)),
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(UChar*)p,
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®s,
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ONIG_OPTION_NONE);
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if (result != ONIG_MISMATCH) {
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result = p - RSTRING_PTR(str);
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break;
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}
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if (RSTRING_PTR(str) == p)
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break;
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p = rb_enc_prev_char(RSTRING_PTR(str), p, enc);
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}
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}
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else {
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range = RSTRING_LEN(str) - pos;
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result = onig_search(RREGEXP(re)->ptr,
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(UChar*)(RSTRING_PTR(str)),
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((UChar*)(RSTRING_PTR(str)) + RSTRING_LEN(str)),
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((UChar*)(RSTRING_PTR(str)) + pos),
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((UChar*)(RSTRING_PTR(str)) + pos + range),
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®s, ONIG_OPTION_NONE);
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}
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result = onig_search(RREGEXP(re)->ptr,
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(UChar*)(RSTRING_PTR(str)),
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((UChar*)(RSTRING_PTR(str)) + RSTRING_LEN(str)),
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((UChar*)(RSTRING_PTR(str)) + pos),
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((UChar*)(RSTRING_PTR(str)) + pos + range),
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®s, ONIG_OPTION_NONE);
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if (result < 0) {
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if (result == ONIG_MISMATCH) {
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rb_backref_set(Qnil);
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